Riot Platforms, Inc., the largest shareholder of mining company Bitfarms Ltd., has sent an open letter to Bitfarms shareholders, calling for further changes to the company's board of directors. The upcoming general meeting of shareholders is scheduled for October 29. Riot will promote reforms at this meeting to improve corporate governance and enhance value for all shareholders. In the letter, Riot also warned Bitfarms not to take further actions that may entrench the position of the current board of directors before the October 29 meeting. If the Bitfarms board insists on "taking any such actions to further entrench its position at the expense of shareholders", the current directors will be "held personally accountable". (Cointelegraph)